ES2009693A6 - Control system for duplex communications channels. - Google Patents

Control system for duplex communications channels.

Info

Publication number
ES2009693A6
ES2009693A6 ES8804030A ES8804030A ES2009693A6 ES 2009693 A6 ES2009693 A6 ES 2009693A6 ES 8804030 A ES8804030 A ES 8804030A ES 8804030 A ES8804030 A ES 8804030A ES 2009693 A6 ES2009693 A6 ES 2009693A6
Authority
ES
Spain
Prior art keywords
data
line
transmission
duplex communications
control system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES8804030A
Other languages
Spanish (es)
Inventor
De La Torre Carlos Hita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Standard Electrics SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Standard Electrics SA filed Critical Alcatel Standard Electrics SA
Priority to ES8804030A priority Critical patent/ES2009693A6/en
Publication of ES2009693A6 publication Critical patent/ES2009693A6/en
Priority to AT89403660T priority patent/ATE123608T1/en
Priority to EP89403660A priority patent/EP0376842B1/en
Priority to DE68922980T priority patent/DE68922980T2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Communication Control (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Massaging Devices (AREA)
  • Transmitters (AREA)

Abstract

This system is applicable to channels that use packet, frame or message protocols, for which a half-duplex communications controller (1) is connected to a multiplexer (2) which, in turn, is connected to two different clock circuits (3, 4), to provide the controller with a working frequency in the reception mode and another working frequency in the transmission mode. The system includes a buffer memory (11) in which the data to be transmitted are stored at a rate much higher than that at which they are transmitted to the line, these data being transferred to a serializer (15) which delivers the data to the line (8) through a transmission interface (16) at the line transmission rate. The system is normally in the reception mode and changes from this state when the transmission operation is desired, after having verified that no reception is taking place.
ES8804030A 1988-12-30 1988-12-30 Control system for duplex communications channels. Expired ES2009693A6 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES8804030A ES2009693A6 (en) 1988-12-30 1988-12-30 Control system for duplex communications channels.
AT89403660T ATE123608T1 (en) 1988-12-30 1989-12-27 CONTROL SYSTEM FOR DUPLEX TRANSMISSION CHANNELS.
EP89403660A EP0376842B1 (en) 1988-12-30 1989-12-27 Control system for duplex communications channels
DE68922980T DE68922980T2 (en) 1988-12-30 1989-12-27 Control system for duplex transmission channels.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8804030A ES2009693A6 (en) 1988-12-30 1988-12-30 Control system for duplex communications channels.

Publications (1)

Publication Number Publication Date
ES2009693A6 true ES2009693A6 (en) 1989-10-01

Family

ID=8259649

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8804030A Expired ES2009693A6 (en) 1988-12-30 1988-12-30 Control system for duplex communications channels.

Country Status (4)

Country Link
EP (1) EP0376842B1 (en)
AT (1) ATE123608T1 (en)
DE (1) DE68922980T2 (en)
ES (1) ES2009693A6 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906153A (en) * 1973-12-26 1975-09-16 Ibm Remote synchronous loop operation over half-duplex communications link
US4177451A (en) * 1975-06-10 1979-12-04 Panafacom Limited Data communication system

Also Published As

Publication number Publication date
EP0376842A2 (en) 1990-07-04
EP0376842B1 (en) 1995-06-07
DE68922980T2 (en) 1995-12-07
ATE123608T1 (en) 1995-06-15
DE68922980D1 (en) 1995-07-13
EP0376842A3 (en) 1991-10-23

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2008-12-30

FD1A Patent lapsed

Effective date: 20081231